Cross laminated timber combining fast growing timber material characteristics and meeting building structure requirements and preparation method thereof

Abstract

The invention discloses cross laminated timber combining fast growing timber material characteristics and meeting building structure requirements and a preparation method thereof, and belongs to the field of timber structures. A laminated board of the cross laminated timber comprises a fast growing timber laminated board with cracks, the fast growing timber laminated board is a whole cracked board, and lengths of all laminated boards of the cross laminated timber are consistent in the horizontal direction. In the preparation method, adjacent layers formed by the fast growing timber laminated board or fast growing timber laminated board combination are assembled and configured in a manner that wood textures are perpendicular to each other in the thickness direction of laminated wood. According to the cross laminated timber combining the fast growing timber material characteristics and meeting the building structure requirements and the preparation method thereof, the material characteristics that the fast growing timber is soft in material and prone to be made into the laminated board with the cracks in a rotary cutting mode are fully utilized, structural stock lumber is replaced for preparing the cross laminated timber, the utilization of the fast growing timber in the field of building structures is expanded, the material cost of a conventional component is greatly reduced, the component preparation process is simplified, the production period is shortened, and the problem that adverse effects on the mechanical property, durability and fireproof performance of the component are caused through gaps in laminated boards of a structural material cross laminated timber component is solved.

Description

technical field [0001] The invention belongs to the field of wood structures, and specifically relates to cross-glued wood; more specifically, it relates to cross-glued wood which combines the material characteristics of fast-growing materials and building structure requirements and a preparation method thereof. Background technique [0002] Orthogonal glued wood board is a solid board with large size and excellent bidirectional mechanical properties formed by the cross-lamination of wood boards of certain specifications through adjacent layers, and through the bonding of structural adhesives. It is often used as walls, floors and Main load-bearing components such as roofs. Its largest size abroad (Europe) has reached 2.95m×16.0m×0.32m (width×length×thickness), and the largest domestic size has reached 3.50m×24.0m×0.50m (width×length×thickness). [0003] Wood has the natural characteristic of shrinking or expanding as environmental conditions (especially environmental humid...

AI Technical Summary

Problems solved by technology

[0011] For the existing cross-laminated timber, the process of internal wood slotting and gaps between the standard timbers is used to reduce its internal stress and cracking deformation, which brings about the problems of reduced mechanical properties of components and weakened fire resistance, and the existing The production technology is too high for the production cost of conventional structural dimension lumber cross-laminated timber components

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